3 files changed, 85 insertions, 0 deletions
diff --git a/src/shared/include/db_item.hrl b/src/shared/include/db_item.hrl
new file mode 100644
index 0000000..86d5863
--- /dev/null
+++ b/src/shared/include/db_item.hrl
@@ -0,0 +1,15 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-record
+(
+   db_item,
+   {
+      id :: any(),
+      perm :: db_user:permission(),
+      val :: any()
+   }
+).
+
+-type db_item() :: #db_item{}.
+
diff --git a/src/shared/include/db_query.hrl b/src/shared/include/db_query.hrl
new file mode 100644
index 0000000..7e5a5b0
--- /dev/null
+++ b/src/shared/include/db_query.hrl
@@ -0,0 +1,63 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-record
+(
+   set_field,
+   {
+      field :: non_neg_integer(),
+      value :: any()
+   }
+).
+
+-record
+(
+   add_to_field,
+   {
+      field :: non_neg_integer(),
+      values :: list(any()),
+      head :: boolean()
+   }
+).
+
+-record
+(
+   update_indexed,
+   {
+      field :: non_neg_integer(),
+      ix :: non_neg_integer(),
+      ops :: list(db_query_op())
+   }
+).
+
+-record
+(
+   set_perm,
+   {
+      perm :: db_user:permission()
+   }
+).
+
+-record
+(
+   set_val,
+   {
+      val :: any()
+   }
+).
+
+-record
+(
+   db_query,
+   {
+      db :: atom(),
+      id :: any(),
+      user :: db_user:user(),
+      ops :: list(db_query_master_op())
+   }
+).
+
+-type db_query_op() :: (#set_field{} | #add_to_field{} | #update_indexed{}).
+-type db_query_master_op() :: (db_query_op() | #set_perm{} | #set_val{}).
+-type db_query() :: #db_query{}.
+
diff --git a/src/shared/include/db_user.hrl b/src/shared/include/db_user.hrl
new file mode 100644
index 0000000..c5b033e
--- /dev/null
+++ b/src/shared/include/db_user.hrl
@@ -0,0 +1,7 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-type db_named_user() :: {'user', any()}.
+-type db_user() :: (db_named_user() | 'admin' | 'any').
+-type db_permission() :: (list(db_named_user()) | 'any').
+